Home / 18,811,457.80-28,215,816.28-8,439,888.48

Finding the Fourth Proportional to 18,811,457.80, 28,215,816.28 and 8,439,888.48

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Solution

The fourth proportional to 18,811,457.80, 28,215,816.28 and 8,439,888.48 is: 12,659,217.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,811,457.80 : 28,215,816.28 = 8,439,888.48 : x
  2. Step 2: Convert to fraction form
    18,811,457.80/28,215,816.28 = 8,439,888.48/x
  3. Step 3: Cross multiply
    18,811,457.80x = 28,215,816.28 × 8,439,888.48
  4. Step 4: Simplify right side
    18,811,457.80x = 238,138,342,775,368.47
  5. Step 5: Solve for x
    x = 238,138,342,775,368.47/18,811,457.80
  6. Step 6: Final answer
    x = 12,659,217.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.